Magnetic separator.



G. ULLRICH.

MAGNETIC SEPARATOR.

APPLICATION 11.21) JULY 29, 1908.

Patentd Dec. 10, 1932.

Z SHEETS-SHEET l.

7 A i y G. ULLRICH.

I MAGNETIC SEPARATOR.

APPLICATION FILED JULY 29, 1908.

1,046,685.. Patented Dec.10,1912.

2 SHLETS-SHEET 2.

enonc ULLRICH, or .BRoxENnrL nnw sour'n warns, Ausrnazim.

T 0 all whom it may comm.-

Be it known that I, Gnonc ULLRIC H,.&

citizen of the Commonwealth of Australia,

residing at Broken Hill, in the State of New South Wales and said Commonwealth, have invented 'a certain new and useful Magnetic- Separator, of which the following is a specification. This invention relates to magnetic separators for the treatment of ore and the like of different degrees of magnetic permeability. Its object is to provide a magnetic separator which will enable one and thelike to be separated into variousgrades'of vary.- ing degrees of magnetic permeability ina rapid, efi'ectual', and 'inexpen'siv'e manner and at the sameftime permit of such fine adjustment that ores or mixtures of ore or the like in which the various component parts differ from each -other but: slightly in" magnetic permeability maybe economically.

.treated so as to produce a hi 'h degree' of concentration at a low cost or uihich W111i?!)- able larger quantities of the more. eas ly separated magnetic ores to. be treated a given time and at a given cost than is practicable with the machines at present in use.

Inthe machine which has been devised for the purpose of attaining these objects the finely divided metalliferousmaterial to be treated is passed through a magnetic fieldhaving zones of different strength and the various constituent part of the ore possessingditl'erent degrees of magnetic permeability are separated one from the other in the same magnetic field but by the different zones. The ore ispassed through this field in one direction by a constantly traveling belt which is returned in the opposite direction through the same field but on a slightly lower plane-than the active. or feeding por- 1 tion of the belt. The various strengths of 1 zones in this field are produced bycertain induction rings moving in a horizontal plane and mounted so that they can be adjusted vertically nearer to, or farther from, the pole pieces of the (Electromagnets hereinafter These .adjustable rings-operate so as to each raise ore particles of the particular degree of magnetic permeability for which it is set and to carry same out of the magnetic field and then to repel said particles by a ci-ange which takes place in the polarity of the ring as it passes from one field magnet to the other as hereinafter described.

Specifieatigm of Letters latent.

. Application flied-H1 29, 1308i ,Se'flal No. 445,852. H

separating.

macnn'rrc. s nranaron.

' In orderthat the invention may be more Patented Dec. 10,1912. I

.clearly understood it willbe described together with various mechanical details of construction by reference to the accompany- .ing drawings, in which lfigure 1 1s a. vertical central section of a magnetic separator constructed according to this invention, while Fig. 2 is aplan thereof with a portion of the. rotating separating ring carrier and other parts removed in orderto clearly illustrate the constructional arrangements of this invehtion. Figs. 3 to 5 'are .views showing one of the main details of the machine. Fig. 6'is a view-illustrating diagrammatically the constitution of the .magneucz'ones of different strengths in the onemagnetic field as above mentioned. Fig.

.7 isaldetail elevation drivingpulley.

. Like reference numeralsindicate the same mental polej pieces 1 are providedtarranged ,around ,a common center as i llustrated in ".plan -in l ig. 2. .".'In the construction shown six of these .polepieces are provided each iormed'bya horizontally anranged field magnet 2 projecting radially from'and su ported by any suitable central .yoke piece 3. Itwill of coursebe .understoodthat any preferredniimber of magnets and pole pieces can lieused as'found expedient. The upper surfaces of the pole pieces 1 are in the same horizontal plane and each pole piece has mounted'up'on it a frame 4 carrying an endless conveyer belt 5.

Upon a central vertical shaft 3 is mounted a horizontally rotating diskor circular carrier 7. Around the outer edge of this carrier are arranged any preferred number of adjustable separating rings 8 so arranged that they travel in a path immediately above the pole pieces 1. These separating rings are supported by setserews 9 or otherwise so that they carrhe adjustedvertically to any desired distance above said poles. As illus trated'in Fig. 6 there \villbc a series of magnetic zones formed in the magnetic field between each of these rings and the pole pieces 1 and the strength of said zones will vary showing 'the magneticas illustrated diagrammatically in said Fig.

-:--an.y-suitable feed hopper as indicated at 10 aration can be conducted rapidly and'in a 3Q greatestmagnetic permeability are lifte'd .ofl

40 of the magnetic fieldfwill be mpeueab the change of polarity of the ring and will thus- 3 a .zontzil lfollerl5 arranged-to bear against the 50 'being wound in such a way that the alier,

6o hopper H. the non-magnetic material being and; thereby providing very convenient means of adapting the machine tio'the treatment of difiercnt'eharacters or kinds of ore or the like. By adjusting the rings 8 so that 5 each successive zoneis stronger than the preceding one the material can be separated nto as many grades of material as there are rings; or, if preferred, two or more of the. rings can'b'e set to theisame distance above 10 the pole pieces so as to separate material-of the same magnetic permeability as will be readily understood. The material to be treated is fed onto the conveyer belts 5 by and is conveyed. through the magnetic field by the belts 5 in a regularstreamand at a regular rate of speed 'sothat although the entireseparation intothe various grades is effected in the'same magnetic field such septhoroughly etlicient manner and with comparatively small expenditure of power,

. either mechanically for driving the machine, or electrically for producing the singlemagnetic field employed for treating each parcel of ore. \Vhen the oreor the like' is},fed

the conveyer' belts 5 into the magnetic field between one of thepole pieces and the arating rings 8 the particles having'fllt e.

thebelt by the first ring and" arelcarried laterally until they are moved from the in fiuence of the magnetic field when theyfdrop into a receiving hopper 11 provided tann 5 purpose and fromlthence are' Y conveyedto any suitable bin or receptacle. pairticles which 'migl1t, owing to their residual-f magnetism, tend to adh'erfto the rin "even after they have passed .outof thein uence.

.be discharged, thereby resulting in" a;

tlu'i'rough cleaning, as it were, of the separat- "ing ring between ea'clroperation and thus' producing a cleaner concentration than would otherwise bepracticable, Theehange of polarity which. takes place in theseparating rings-8as they pass from'one pole piece to the ncxtJ'is caused by. the electromagnets 2 natepole pieces are of different 'polar ityr Each class of matdrial'of d-ifl'e'i-ent; magnetic 5 permeability will be successively raisedfrom oil the conveyer beltbyt-he separating ring Sta-whose magnetic zone has been adjusted to.

' suit the particular degree of magnetic 'mrnu-ahilit-y of that particular grade of material and will he carried out-of the magnetic field and be discharged into a receivingfinally discharged by the conveyer belt into a hopper 12. The total number of lines of force in the magnetic field will, as indicated diagrammatit-ally in Fig. (i. be et 'ectually y.. means of vb nientP-wliieh 21 as heed-especially devised for 'in the field as tiieyare/merely direrted in Ldefinite proportions between the pole piece and the diflerent rings according to the adjustmentof said rings 8 from or to said pole piece.'. In the arrangen'ient illustrated in said figure in which the rings are adjusted to produce magnetic Zones ot'gradually in'/ creasing strength the lines of force in the" first zone will be more diffused-than in the others andcin-each successive zone the i'n'es of force willb more concentrated than in theprevlous one:

.t The conveye'r belts 5 are each passed around alpaityof-horizontal rollers 13' and 14: carried by the brackets oas upports 4 and one or both of said rollers may be vertically ters; inf'which 'a'" beltfeed' conveyer was used {the belt 1 Sfltd so: th"

j I 'lt returnsthrouglrt-hemagnetic tield'" betweenl the feed 1 portion of 'thegbelt..antl theipole pieee-as shown. -In'this' jivayfth'e le gtl'i of' the b'eltfmay be consideri ably d nd the construction of the ma: 5

. h e 't e t' ye w driven? y' ny v bl rangementf'ofgearing'as for'jinstatic s haftingfcou'pled together .by j

' eyehgea'rin for 'by small electro- 1'00 "motors-"arranged to 'drlve them through the medium" of flekiblefbelting but the arrange the purpose; sf=thefone =shown 't'n'the draw-.-

'outer-peripheny: of the separating ring car- 'rieriToriofthe outerseparating ring. The 's'pindleiif this-rolleris'in geartln ough the" medium er ser-mi 16 '-.an d worm Wheels 17 with{tl ie'-' spindle of'the belt roller 13. The I sn mlldrive roller l5jis heldagainst the rotat'mgrmg carrier- 7 bymagneticattraction" j t-hing happening'to stopthe electrical ex}, "citation offthe machine-the feed will cease" ow'ingjto the rollers 15 being no'longer held 'iirfrictionalcontact with theearrier '7. It .is jobvious that ne way of'thus permitting the roller 1510' be drawn into frictional engagement, is tdprovide a universal joint in the shaft upon'whieh 'itwis mo'untedr Consequently ;the feeding. of the ore will automatically cease upon t-h'e stoppage of the current notwithstanding that the mat-hineieontimes to revolver 1 j I The gear 16 and "17 'is preferably inclos'ed in an oiltight-casing 18 constructed as illllS-".

' 65 used in 'tl11' lur|nation of the different zones 4 tratedin Fig. 5 and made in halvesfso that-- mgsllns nsfll ction'is clearlyshown'in 105' F1 'an'dar'andcomprise'sa small hOlland. so arranged thatid the event ofan'y 115 form an oil bath therefor.

- The" horizontally. rotating separating ring carrier 7 'is supported by a ball 'race19 as illustrated in order to reduce 'the' friction,

andtherefore the power necessarygto drive; I h 3 *:7. :Ina magnetic separator,"thejcomb1na* it, to a minimum.

What I do claim as my in\-'entionand wish af Secure by Letters Patent; is:

I. A magnetic separator-f for ore andlthe. like, comprising means for creating a'magnet-ic field'having concentric annular "zones" g pt successively increased "strength 'in radial irection; an independently mounted mag.- netic carrier element movable through said \ifieldymeans for feeding'the material to be separated through said'magnetic fields inv -a horizontal plane parallel with the magnetic carrier element, whereby; each .classof material will be elevated fromfthe same horizontal plane by the action of the magsnetic zone towhich it is susceptible.

2. In a magnetic separatorgthe combina-' tion with means for creating-a series'ofmag; netic fields, of a. plurality-of horiz'ontally" bcdil y rotating niagnetizable separating '3 members, moving through thesuccessivejl magnetic fields, of conveyers adapted to'p assj p through'themagnetic. fields and means -forj 3 independently adjusting eachiof thasepw} rating member's relative to the .conveyers. 1 3 In amagneticseparator the combipa i tion with a plurality of magnets, the; suc ce'ssive magnet poles being of 1 opposite} poi larity, of a plurality of magneticseparat-ing members in juxtaposition and independ-l ently adjustable and movable through themagnetic fields, created bythe said mag ets;--

and means for conveying the material to be;

40 separated through the magnetic fields, the

material gathered by the 'separatingnmemhers being discharged intermediate-the" adjacent. magnetic fields.

4}. In a magnetic separator, the combination with a series of radial magnets," the adjacent magnets being of opposite polarity, of a horizonta ily rotatable member adapted to more through the magnetic fields created hy the magnets, means for conveying the 59 material to be separated-into the magnetic holds, a series of parallel. magnetizable' gathering. ringscarried by the rotatable member,- and means for. independently adins-ting each of said gathering ringsirelatire to the magnets. I

In a magnetic separator,the combination with a radial series of magnets, of a horizontally rotatable carrier, a series-of magnetic separating rings concentrically ar- 9 ranged. and a conveyer passing across the separator elements and pivotally adjustable to progressively vary the spacing of theconreyer and the series ot sep'arating elements- V s5 6. In a'magnetic separator, the combinanetic clutch operated I tion with a? rotatable magnetic member, a

magnet constructed and arranged to excite' said member, of a conyeyer, adapted to carry? the material 'to be separated and a magnetic clutchoperated by therotatabl'e-member' for d moving the conve er. 1

tion with :-a; ;traveling; ma etic'iseparating member' a con-veyer for presenting the ma== terial" to be 'separated thereto,'and a mag etic clutchoperat'ed by the magnetic mem berifor moying 'th'e conveyer, 7

'8, In .a magn'etic.separatorythe combin tion witha set-'ofradial electrounagnets hay; ing-pole pieces, the successive; poles creat-fib ing fields ofreversed polarity, of a 'hor'i zontzilly rotatin magnetic 'sepiaratingring," and means for eeding the magnetic material .betweena pole piece and said-ring in anin tardlyradial direction, and means-for rotating the separating ring pastthe'poles of alternating-polarity insuccession, wherebyt-he'magnetic material gathered by the parat-ing. ring ibeing 1 discharged 'intermev 9.?- Inaunagnetic separator the combina- Twjth.:asradial-seriesjofimagnets, of a,

'iz ontally' rotatablecarrier, a series of separating rings}: concentrically "rangeda conveying members for. carryin g; the-.- materi'al toQb'e separated into the magnetic gfields; and fnieans securing the separating ringstto the carrier foriindepend- 1 adjiistmenttoand from the'carrier.

lOiV-vIn: arma'gneticgseparaton the: combina- 10o .tion zwith aaseries of radial magnets,- of a horizontally j-rotatable carrier, or series of magnetic separating rings; ncans securing th efseparatinggrings to the carrier for independent adjustment to and from theca'rrier, a conveyer passing across'the separator elements and pivotally adjustableto progressively varythespacing of the conveyor and the series of separatingrelementsu e 11. In amagnetic separator, the combinationjwith-a series of radial magnets, of a horizontally rotatable carrier, a series of magnetic separating rings, means securing the separating rings-to the carrier for inde- .pen dent adjustment to and from the carrier,

a conveyer passing across the separator ele- -ments and pivotally adjustable to progres- .sively vary the spacing of the conveyer andthe series of-separatin elements, and a magy the magneticseparating element for moving the conveyer. 3

12. In a magnetic separator, the combination with horizontal rotating carrier, at plurality of parallel magnetizable separating rings secured thereto,- means for creating magnetic fields through which said rings pass,'conveyi ng members for carrying the material to be separated into the magnetic fields,- and means whereby each of the separ'atingrings may be vertically adjusted relae't ia l i ent magnetic fields. 90

tive to themagnefie lnean's and indepeng ient-ly of each other. 1 l 13. In a magnetic separator, the co bin tiorrwith a'revolving magnetic elemenfiei 5 a Eonveyer to ,present' maieriaL'fio'be s e" rated tothe magnetic element, a frietgb drive pulley, gear to drive saidconvejer,

- said pulley being ccm'osedof paramagnetic;

1n 1;e riz;l, and means or so *supportingfthe-i 10 pulley that it will be brought-inte drlvin'gq element byithe'ex c'ontaefwith the magnetic citation of ,the latter. j

14, In a magnetic separat -on' ae rrier r0- tafablebgliilj in el horizontal lane, and a series of magnetic separating e ements, and 15 means securing" said elements to the Carrier for independent adjustment to and from the 7 carrier.

In testimony wliereof-I have signed my n'ameto this specification in'the presence of 20 I two snbscribingwitnesses.

4 GEQRG ULLR-ICH. M

\Vitnesses'; i

" J. DOUGLAS BnmELL,

ANNIE EDWARDS. 

